Fallout Official Survival Guide (also known as Official Survival Guide To Fallout) is the official Fallout strategy guide. It was written by William H. Keith, Jr. and Nina Barton and published by BradyGames. The guide provides walkthroughs for individual quests and information on enemies, mutants, and friendly characters. It also includes strategies for tactical warfare.

The guide also contains humorous and helpful tips from an old-time adventurer named Ol' Slim.